Apparatus for regulating speed variations in power engines exposed to varying load



Aug. 28, 1928. 1,682,270

- J. E. ERIKSEN vr APPARATUS FOR REGULATING SPEED VARIATIONS IN POWER ENGINES I EXPOSED T0 VARYING LOAD Filed 001:. 29, 1926 Patented Aug. 28, 1928.

UNITED STATES PATENT OFFICE.

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Application filed dctober 29, 1928. Seria1"11'o. 145,081.

' The present invention relates to the regulation of the speed of power engines exposed to varying'load, as an example, in the case of marine-engines when the propeller 1s lifted from the water. In this event the .admission of steam to the engine should be arrested momentarily in a positive manner if the usual manipulation by means of the throttle valve is to be omitted. The present regulating device is adapted to act momentarily and positively whether the variations of speed of the power engine are rapid or slow, and the effect is obtained by using centrifugal I5 with a flyheel, the action caused by the relative variations of speed between 'the' swingin -motion of the centrifugal bodies and the inertia of the flywheel bein used to control. the admission of pressure uid to a,

piston which in turn controls the admission of pressure fluid to the power englne' The invention is illustrated as an example in the accompanying drawings. v

Figure 1 is a vertical axial sectional v1ew of the improved regulating device.

Figure 2. is a View on the plane disclosingthe fly wheel and the governorweights. v

Figure 3 is a detail planshowing a portion of the sleeve and. also showing the yoke, the coupling member and one of the segments which coacts with the sleeve to operate the coupling member. a a Y The apparatus shown com rises a shaft 1 5 carried in a bearing 2. On sald'shaft is rotatably mounted a sleeve 3 u on which a beltpulley 4 is fastened by a ey and on which the flywheel 5 is loosely mounted. In the hub of the belt-pulley. are disposed two pins 6 4o diametrally of each other. These pins project arallel to the shaft into arecess in the flyw eel 5 and support two centrifugal bodies 7 which at their ee ends are connectedto springs 7 a forcing them inwards against the action of centrifugal force. Thesprings are connected at their op osite ends to pins pro-- 'ecting from the pu ey 4. The centrifugal odies 7 are formed as double levers the arts 9 projecting inwardl and engagmg notc es 8 in the hub 10 of the ywheel 5. The said hub is provided with toothed parts 12meshing with toothed segments 13 which in turn are rotatably supported by pins 14 on a yoke 11 connected to the sleeve 3. The segments 13 to are provided with lateral arms 13 which are bodies incombination detail transverse sectional adjust the slide valve and thereby cause the a screw may be advantageously used instead I 1. Inan apparatus for regulating the speed cams coacting with a coupling member 15 coacting in turn with a slide valve 16 which, afterbeing adjusted will either lead the pressure fluid to a piston 17 or conduct it from same. The piston is normally maintained in its initial position by means of a spring 18. The rod 19 of'the piston may be connected in inliiy suitable manner to a throttle-valve or the The action of the apparatus will be clear from the above description: when the rotary speed of th lshaft increases slowly the cen-' 1 trifugal b0 ies 7 will, owing to increasing centrifugal force be swung outwards and con-, sequently by means of the lever arms 9 and the notches 8 turn the flywheel relatively to the shaft.

When the speed becomes eater than alallowed, the coupling 15 1 be moved by the cam arms '13 and cause the slide valve 16 7 to be adjusted so as to lead pressure fluid behind the piston 17 and force the same with its piston rod 19 to the right for manipulating the throttle valve and simultaneously carry the slide valve back to its initialpositmn. 80

When the s eed is suddenly increased the inertia of the ywheel will prevent its motion and consequentl the flywheel act upon the centrifugal odies so as to momentarily so piston 17 to momentarily arrest the admission of pressure fluid.

It will be understood that the transfer of angular motion from the belt-pulley or the like and the flywheel as an axial-motion to the coupling 15 may be effected by any other means than that described. As an example of the mechanism shown.

Claims 1 1m in power engines exposed to varying load, a rotatable sleeve, a driving pulley connected to the same, a flywheel mounted loosely on the said sleeve, and having a recess taking up pins for supporting centrifugal bodies, a hill) on the flywheel provided with notches coacting with the said centrifugal bodies, and means for transferring the relative adjustment of the said parts to a device controlling N5 the admission of pressure fluid to the power engme.

2. In an apparatus for regulating the speed in power engines exposed to varying connected to the same, a flywheel mounted gressure fluid to and the outlet of pressure uid from said auxiliary cylinder to actuate a said piston and hence also said engine throt-' tle valve controlling-means.

3. In apparatus for regulating the speed of I power engines exposed to varying oad, a sleeve mounted for rotation, at driving ulley fast to the sleeve, centrifugally acting bodies mounted on the said pulley, a fly wheel mounted loosely on the sleeve and provided with notches coacting with the centrifugal bodies and also provided with gear teeth, turnable-tooth segments coacting'with said gear teeth of the sleeve and on which said segments are mounty wheel, a yoke fast to the neaaavo ed, member movable by said segments, a cyl-- on said piston, said valve being opposed to the piston and being connected to said memher which is movable by said segments and an enginethrottle valve controlling member' connected to said piston for operation thereby. 4. In apparatus'as claimed inclaim 3, in which the piston is moved by steam intone direction and a spring is employed to mov the piston'in the reverse direction. v a 5. In a power engine, a flywheel, a piston, a centrifugally actuated device coacting with said flywheel,a valve device, means for transferring the adj ustingv motion of the flywheel to said valve device for controlling the admis- 1 sion of pressure fluid to said piston, and means acted upon by the said piston for adjustment of the supply of pressure fluid to the power engine.

JOHAN EMIL ERIKSEN. i.

In testimony whereof I aflix my signature 

